12208397 has 8 divisors (see below), whose sum is σ = 13073400. Its totient is φ = 11359744.

The previous prime is 12208381. The next prime is 12208411. The reversal of 12208397 is 79380221.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 12208036 = 19^2 + 3494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12208397 - 2⁴ = 12208381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2522 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (1634175).

Almost surely, 2^12208397 is an apocalyptic number.

12208397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12208397 is a deficient number, since it is larger than the sum of its proper divisors (865003).

12208397 is an equidigital number, since it uses as much as digits as its factorization.

12208397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12208397 is about 3494.0516596067. The cubic root of 12208397 is about 230.2605553801.

The spelling of 12208397 in words is "twelve million, two hundred eight thousand, three hundred ninety-seven".